R is part of many Linux distributions, you should check with your Linux package management system in addition to the link above.

Source Code for all Platforms

Windows and Mac users most likely want to download the
precompiled binaries listed in the upper box, not the source
code. The sources have to be compiled before you can use
them. If you do not know what this means, you probably do not
want to do it!

Questions About R

If you have questions about R like how to download and install
the software, or what the license terms are,
please read our answers to frequently asked
questions before you send an email.

What are R and CRAN?

R is ‘GNU S’, a freely available language and environment for
statistical computing and graphics which provides a wide variety of
statistical and graphical techniques: linear and nonlinear modelling,
statistical tests, time series analysis, classification, clustering,
etc. Please consult the R project homepage for further information.

CRAN is a network of ftp and web servers around the world that
store identical, up-to-date, versions of code and documentation for
R. Please use the CRAN mirror nearest to you to minimize network
load.

Note that we generally do not accept submissions of precompiled
binaries due to security reasons. All binary distribution listed above
are compiled by selected maintainers, who are in charge for all
binaries of their platform, respectively.